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          <h1 class="post-title" itemprop="name headline">ubuntu编译ffmpeg</h1>
        

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        <blockquote>
<p>ffmpeg 源码编译<br><a id="more"></a></p>
</blockquote>
<h2 id="Ubuntu上编译安装"><a href="#Ubuntu上编译安装" class="headerlink" title="Ubuntu上编译安装"></a>Ubuntu上编译安装</h2><h4 id="1-安装yasm-不安装后面会报错：报错-yasm-nasm-包不存在或者很旧"><a href="#1-安装yasm-不安装后面会报错：报错-yasm-nasm-包不存在或者很旧" class="headerlink" title="1.安装yasm 不安装后面会报错：报错 yasm/nasm 包不存在或者很旧"></a>1.安装yasm 不安装后面会报错：报错 yasm/nasm 包不存在或者很旧</h4><figure class="highlight routeros"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo apt-<span class="builtin-name">get</span> install yasm</span><br></pre></td></tr></table></figure>
<h4 id="2-安装第三方库-x264"><a href="#2-安装第三方库-x264" class="headerlink" title="2.安装第三方库:x264"></a>2.安装第三方库:x264</h4><p>不安装H.264第三方库使用H.264的时候会报错Cannot load libcuda.so.1<br><a href="http://download.videolan.org/pub/videolan/x264/snapshots/" target="_blank" rel="noopener">下载网址</a><br>文件名: last_stable_x264.tar.bz2<br><figure class="highlight gauss"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">./configure–<span class="keyword">enable</span>−shared–<span class="keyword">disable</span>−asm./configure–<span class="keyword">enable</span>−shared–<span class="keyword">disable</span>−asm <span class="built_in">make</span> </span><br><span class="line"><span class="built_in">make</span> install</span><br></pre></td></tr></table></figure></p>
<h3 id="安装ffmpeg"><a href="#安装ffmpeg" class="headerlink" title="安装ffmpeg"></a>安装ffmpeg</h3><h4 id="1-解压缩"><a href="#1-解压缩" class="headerlink" title="1.解压缩"></a>1.解压缩</h4><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-tag">tar</span> <span class="selector-tag">-xvjf</span> <span class="selector-tag">ffmpeg-3</span><span class="selector-class">.4</span><span class="selector-class">.1</span><span class="selector-class">.tar</span><span class="selector-class">.bz2</span></span><br></pre></td></tr></table></figure>
<h4 id="2-配置ffmpeg"><a href="#2-配置ffmpeg" class="headerlink" title="2.配置ffmpeg"></a>2.配置ffmpeg</h4><figure class="highlight jboss-cli"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="string">./configure</span> <span class="params">--enable-shared</span> <span class="params">--enable-libx264</span> <span class="params">--enable-gpl</span> <span class="params">--prefix=tmp</span></span><br></pre></td></tr></table></figure>
<p>–enable-shared：指定生成动态库，默认是静态库。</p>
<h4 id="3-安装ffmpeg"><a href="#3-安装ffmpeg" class="headerlink" title="3.安装ffmpeg"></a>3.安装ffmpeg</h4><figure class="highlight gauss"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="built_in">make</span></span><br><span class="line"><span class="built_in">make</span> install</span><br></pre></td></tr></table></figure>
<h6 id="在tmp目录中可以看到bin-include-lib-share"><a href="#在tmp目录中可以看到bin-include-lib-share" class="headerlink" title="在tmp目录中可以看到bin include lib share"></a>在tmp目录中可以看到bin include lib share</h6><h6 id="ffmpeg正常安装后执行ffmpeg时出现如下错误："><a href="#ffmpeg正常安装后执行ffmpeg时出现如下错误：" class="headerlink" title="ffmpeg正常安装后执行ffmpeg时出现如下错误："></a>ffmpeg正常安装后执行ffmpeg时出现如下错误：</h6><p>==ffmpeg: error while loading shared libraries: libavdevice.so.53: cannot open shared object file: No such file or directory==</p>
<h5 id="解决办法："><a href="#解决办法：" class="headerlink" title="解决办法："></a>解决办法：</h5><p>编辑 /etc/ld.so.conf 文件<br><figure class="highlight stylus"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">vi /etc/ld<span class="selector-class">.so</span><span class="selector-class">.conf</span></span><br></pre></td></tr></table></figure></p>
<p>加入：lib 目录  然后执行<br><figure class="highlight ebnf"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attribute">ldconfig</span></span><br></pre></td></tr></table></figure></p>
<h5 id="ESM6802-板子编译"><a href="#ESM6802-板子编译" class="headerlink" title="ESM6802 板子编译"></a>ESM6802 板子编译</h5><figure class="highlight jboss-cli"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="string">./configure</span> <span class="params">--enable-cross-compile</span> <span class="params">--arch=</span><span class="string">"armv7-a"</span></span><br><span class="line"><span class="params">--enable-pic</span>      </span><br><span class="line"><span class="params">--enable-shared</span> </span><br><span class="line"><span class="params">--disable-static</span> </span><br><span class="line"><span class="params">--target-os=linux</span> </span><br><span class="line"><span class="params">--cross-prefix=</span><span class="string">"arm-emtronix-linux-gnueabi-"</span>    </span><br><span class="line"><span class="params">--sysroot=</span><span class="string">"/opt/fsl-imx-x11/4.1.15-2.0.1/sysroots/cortexa9hf-neon-emtronix-linux-gnueabi"</span></span><br><span class="line"><span class="params">--disable-asm</span> <span class="params">--extra-cflags=</span><span class="string">"-march=armv7-a -mfpu=neon -mtune=cortex-a9-mfloat-abi=hard -mcpu=cortex-a9 -fPIC"</span> </span><br><span class="line"><span class="params">--extra-ldflags=</span><span class="string">"-march=armv7-a -mfpu=neon -mtune=cortex-a9-mfloat-abi=hard -mcpu=cortex-a9 -fPIC"</span> </span><br><span class="line"><span class="params">--prefix=tmp</span></span><br></pre></td></tr></table></figure>

      
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